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《CIESC Journal》 2019-01
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Saturated adsorption capacities of graphene aerogels on organics

LIU Hui.e;HUANG Yangfan;MA Yanbing;CHEN Shuang;State Key Laboratory of Heavy Oil Processing, China University of Petroleum;  
Graphene aerogel(GA) was prepared through Pickering emulsion method. Pure organic compounds and oil emulsion in water were used as substances to be absorbed by GA. Saturated adsorption capacities were observed for the GA prepared in this work and for carbon aerogels from other researchers. It was found that the saturated adsorption capacities of almost all the carbon aerogels were directly proportional to densities of the organics,indicating constant adsorption volume of organics exists for certain carbon aerogel, independent of the kind oforganics. It is expected that the adsorption of organics by carbon aerogels is a volume filling process, so that higherpore volume of aerogels favors the saturated adsorption abilities of organics. However, occupancy of pores, or thefilling percent of pores by organics is also an important determining factor. The prepared GA has lower adsorptioncapacity for oil in water than its adsorption capacity for pure oil, and should be related to competitive adsorption ofwater and diffusion resistance of organic matter.
【Fund】: 山东省自然科学基金项目(ZR2017MB015);; 重质油国家重点实验室资助项目(SLKZZ-2017002);; 中国石油科技创新基金(2017D-5007-0601)
【CateGory Index】: TQ424;X703
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